Sebastien is a distinctive boys' name in United States, ranking #1071 in 2002 with 142 recorded births. The name reached its all-time peak in 2007 with 178 births ranking #1058. Since 1996, the popularity has increased by 121.9%. In 2002, approximately 1 in every 13,672 boys born was named Sebastien. FALLING Recent data shows the name is currently falling.